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use thiserror::Error;
/// Errors that can be returned for roadmaps.
#[derive(Error, Debug)]
pub enum RoadmapError {
#[error("roadmap has no goals, must have exactly one")]
NoGoals,
#[error("too many goals, must have exactly one: found {count:}: {}", .names.join(", "))]
ManyGoals {
count: usize,
names: Vec<String>,
},
#[error("step {name:} depends on missing {missing:}")]
MissingDep {
name: String,
missing: String,
},
#[error("step is not a mapping")]
StepNotMapping,
#[error("'depends' must be a list of step names")]
DependsNotNames,
#[error("unknown status: {0}")]
UnknownStatus(String),
#[error(transparent)]
SerdeError(#[from] serde_yaml::Error),
}
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